Ukufundisa indlela yokukhetha i-epoxy resin ephilisayo?

I-epoxy curing agent sisithako sekhemikhali esisetyenziselwa ukunyangaii-resin ze-epoxyNgokusebenzisana neekhemikhali namaqela e-epoxy kwi-epoxy resin ukuze kwenziwe isakhiwo esidityanisiweyo, ngaloo ndlela senza i-epoxy resin ibe yinto eqinileyo nehlala ixesha elide.
Indima ephambili yee-epoxy curing agents kukuphucula ubulukhuni, ukumelana nokukruquka, kunye nokumelana neekhemikhali kwee-epoxy resins, nto leyo eyenza zibe zizinto ezihlala ixesha elide nezihlala ixesha elide, eziyinxalenye ebalulekileyo yee-epoxy pultruded composites. Eli nqaku labelana ngendlela yokukhetha i-epoxy-curing agent efanelekileyo ngokusekelwe kwizinto ezahlukeneyo:
Ngokweemeko zokuphilisa
- Ukulungisa kubushushu begumbi: Ukuba kufuneka ukulungisa ngokukhawuleza kubushushu begumbi, ii-arhente zokulungisa i-aliphatic amine ezifana ne-ethylenediamine kunye ne-diethylenetriamine zinokukhethwa; ukuba isantya sokulungisa asifuneki sibe phezulu, kwaye sigxile kwixesha lokusebenza, ii-arhente zokulungisa i-polyamide zinokukhethwa.
- Ukutshisa ubushushu: Ukuze kuxhathiswe ubushushu obuphezulu kunye neempawu zoomatshini, ii-aromatic amine curing agents, ezifana ne-diaminodiphenylsulfone (DDS), njl.njl., zingasetyenziswa; ukuze kulungiswe ubushushu obuphantsi, ii-modified amine curing agents ezinee-accelerators zinokuqwalaselwa.
- Ukunyanga phantsi kweemeko ezikhethekileyo: ukuze kunyangwe kwindawo enomswakama, kukhethwe iarhente yokunyanga emanzi; kwinkqubo yokunyanga ekhaphukhaphu, kukhethwe iarhente yokunyanga ene-photoinitiator kunye ne-epoxy acrylate.
Ngokweemfuno zokusebenza
- Iimpawu zoomatshini: ukuba kufuneka ubulukhuni obuphezulu kunye namandla aphezulu, ii-arhente zokunyanga ze-anhydride zinokukhethwa; ukuba kufuneka ukuguquguquka okuhle kunye nokumelana nempembelelo, ii-arhente zokunyanga eziqinileyo ezifana nerabha ye-polysulfide zifanelekile ngakumbi.
- Ukumelana neekhemikhali: iimfuno eziphezulu kukumelana ne-asidi, i-alkali, kunye ne-solvent,i-phenolic resiniarhente yokunyanga okanye iarhente yokunyanga i-amine eguquliweyo ifanelekile ngakumbi.
- Ukumelana nobushushu: Kwiindawo ezishushu kakhulu, ezinje nge-200℃ engaphezulu, iarhente yokulungisa i-silicone okanye iarhente yokulungisa enesakhiwo se-polyaromatic ingaqwalaselwa.
Ngokwemeko-bume yokusetyenziswa
- Indawo yangaphakathi: iimfuno eziphezulu zokhuseleko lokusingqongileyo, iarhente yokulungisa i-epoxy esekwe emanzini okanye iarhente yokulungisa i-aliphatic amine eguquguqukayo ephantsi ifanelekile ngakumbi.
- Indawo engaphandle: kufuneka ukumelana nemozulu entle, ii-arhente zokunyanga i-alicyclic amine ezinokumelana ne-UV ezilungileyo zifanelekile ngakumbi.
- Iindawo ezikhethekileyo: Kwiindawo ezineemfuno eziphezulu zococeko ezifana nokutya namayeza, kufuneka kukhethwe ii-epoxy curing agents ezingenabungozi okanye ezingenabungozi kangako ezifana nee-polyamide curing agents eziqinisekisiweyo zokhuseleko lokutya.
Cinga ngeemfuno zenkqubo
- Ixesha lokusebenza: Ngexesha elide lokusebenza, khetha iarhente yokulungisa efihlakeleyo, efana ne-dicyandiamide, njl. Ngexesha elifutshane lokusebenza kunye nexesha lokulungisa, khetha iarhente yokulungisa i-aliphatic amine ekhawulezayo.
- Inkangeleko Yokuphilisa: Ukuze ufumane inkangeleko yokuphilisa engenambala necacileyo, khetha ii-alicyclic amine curing agents, njl. Xa ufuna imibala ephantsi, khetha ii-general amine curing agents ezixabiso liphantsi.
Idityaniswe nexabiso
- Phantsi kwengcamango yokuhlangabezana neemfuno zokusebenza, thelekisa ixabiso kunye nomthamo wee-agent ezahlukeneyo zokunyanga. Ixabiso lee-agent eziqhelekileyo zokunyanga i-amine liphantsi kakhulu, ngelixa ezinye ii-agent ezikhethekileyo zokunyanga ezifana nee-agents zokunyanga ezine-fluorine kunye ne-silicone zibiza kakhulu.